The New Zealand fifty-cent coin is a coin of the New Zealand dollar. It was the largest by denomination, diameter and mass to have been introduced on the decimalisation of the currency on 10 July 1967, replacing the pre-decimal crown coin (five shillings).

Large fifty cent coins issued in 1978 circulated for 28 years before they were replaced with a smaller type and demonetised on 31 October 2006.

The Queen wears the "Girls of Great Britain and Ireland" diamond tiara, a wedding gift from Queen Mary (Her Majesty's grandmother) in 1947 - which she also has on the Rank-Broadley and the Gottwald portraits.

Around, the monarch's legend and the date: ELIZABETH II NEW ZEALAND 1978.

The reverse features the barque Endeavour sailing south. HMS Endeavour was the ship on which Captain Cook became the first Briton to reach New Zealand in October 1769. Mount Taranaki (Egmont) is seen in the distance; above left, the denomination 50 [cents]; below, ENDEAVOUR.